Experimental Investigation of Power Generation from Salinity Gradient Solar Pond Using Thermoelectric Generators for Renewable Energy Application

Abstract:

Low grade heat (<100°C) is currently converted into electricity by organic rankine cycle (ORC) engines. ORC engines require certain threshold to operate as the organic fluid generally boils at more than 50°C, and fails to operate at lower temperature. Thermoelectric generators (TEGs) can operate at very low temperature differences and can be good candidate to replace ORC for power generation at low temperatures. In this paper, the potential of power generation from TEG and salinity-gradient solar pond (SGSP) was investigated. SGSP is capable of storing heat at temperature up to 80°C. The temperature difference between the upper convective zone (UCZ) and lower convective zone (LCZ) of a SGSP can be in the range of 40°C 60°C. This temperature difference can be used to power thermoelectric generators (TEG) for electricity production. This paper present result of a TEG system designed to be powered by the hot and cold water from the SGSP. The system is capable of producing electricity even on cloudy days or at night as the SGSP acts as a thermal storage system. The results obtained have indicated significant prospects of such system to generate power from a low grade heat for remote area power supply.

• Periodical: Applied Mechanics and Materials (Volume 393)
• Pages: 809-814
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.393.809
• Online since: September 2013
• Authors: Baljit Singh, Jaisatia Varthani, Muhammed Fairuz Remeli, Lippong Tan, Abhijit Date, Aliakbar Akbarzadeh
• Keywords: Power Generation, Renewable Energy, Solar Pond, Thermoelectric Generator

References

[1] A.A. El-Sebaii 1, M.R.I. Ramadan, S. Aboul-Enein, A.M. Khallaf, History of the solar ponds: A review study, Renewable and Sustainable Energy Reviews, 15, (2011) 3319-3325.

DOI: 10.1016/j.rser.2011.04.008

[2] H. Tabor, Solar Ponds Solar Energy, 27 (1981) 181-194.

DOI: 10.1016/0038-092x(81)90120-1

[3] Wafik A. Kamal, Solar pond literature analysis, Energy Convers. Mgmt , 32, (1991)207-215.

[4] Randeep Singh, Sura Tundeeb , Aliakbar Akbarzadeh, Electric power generation from solar pond using combined thermosyphon and thermoelectric modules, Solar Energy, Volume 85, 2, (2011)371-378.

DOI: 10.1016/j.solener.2010.11.012

[5] D.M. Rowe & Gao Min, Evaluation of Thermoelectric Modules for Power generation, Journal of Power Sources, 73(2), (1998) 193-198.

DOI: 10.1016/s0378-7753(97)02801-2

[6] Hongxia Xia, Lingai Luo and Gilles Fraisse, Development and Applications Of Solar-Based Thermoelectric Technologie, Renewable And Sustainable Energy Reviews, 11 (2007) 923-936.

DOI: 10.1016/j.rser.2005.06.008

[7] G.F. Rinalde , L.E. Juanico, E. Taglialavore ,S. Gortari , M.G. Molina, Development Of Thermoelectric Generators For Electrification Of Isolated Rural Home, International Journal Of Hydrogen Energy, 35, ( 2010) 5818-5822.

DOI: 10.1016/j.ijhydene.2010.02.093

[8] Bertrand F. Tchanche , Gr. Lambrinos, A. Frangoudakis, G. Papadakis, Low-Grade Heat Conversion Into Power Using Organic Rankine Cycles – A Review of Various Applications, Renewable and Sustainable Energy Reviews. 15 (2011) 3963-3979.

DOI: 10.1016/j.rser.2011.07.024